Clutch.



0. E. LUTZ.

` CLUTCH. APPLICATION FILED SEPT. 19, 1908.

Patented Dec. 8, 1908.

ORVILLE E. LUTZ, OF LAONA, WISCONSIN.

CLUTCH.

Specification of Letters Patent.

Application led. September 19, 1908.

Patented Dec. 8, 1908.

Serial No. 453,861.

To all whom 'it 'may concern:

Be it known that I, ORVILLE E. LU'rz, a citizen of the United States, residing at Laona, in the county of Forest and State of ll'visconsin, have invented certain new and useful Improvements in Clutches, of which the following is a specification.

This invention consists of novel improvements in what are commonly known as friction and toothed clutches.

The aim of the invention is to provide a clutch of the above type wherein a loose pulle is adapted to be operatively connected wlth a driving shaft by means of friction devices, and after once bein connected is locked positively to the driving shaft by means of coperating teeth and locking members. f:

A feature of the invention of special advantage is the provision of operating devices whereby the friction and toothe clutch means are adapted for independent operation.

For a. full understanding of the invention, reference is to be had to the following detail description and the accompanying drawings, in which Figure 1 is a vertical sectional view of a clutch embodying the essential features of the invention; Fi". 2 is a side view of the clutch, and Fig. 3 1s a detail view of the `friction disk carrying the sliding lock members.

Throughout the following detail description and on the several figures of the drawings, similar parts are referred to by like reference characters.

Specifically describing the invention and referring particularly to the drawings, the numeral 1 denotes a driving shaft upon which is rigidly secured by any suitable means such as a key the hub or bushing 2. The hub 2 is provided at one end thereof with a friction rim or member 3 which is integral with the hub preferably and between which and the friction disk 4 is mounted a loose pulley 5. The pulley 5 is loose, as aforesaid, or freely rotatable on the hub 2 and is formed with the usual broad rim 5a to receive a driving belt, not shown. The rim 5ri of the loose pulley 5 is provided with internally arranged teeth 5h whlch are adapted to be engaged by locking members in the form of blocks slidably mounted on the outer side of the friction disk 4. The blocks or locking members 6 are ada ted for radial sliding movement, and each o said members 'I is mounted between spaced guides 7 applied to the outer surface of the disk 4. The disk 4 is formed with an Outstanding hub 8 by which said disk may be moved toward and from the adjacent side of the pulley The disk 4 is operable by a lever 9 pivoted to a suitable support 10 and formed with a forked end 9a connected with the grooved collar 11 on the hub 8. The collar 11`may be secured .to the hub 8 by any suitable securing means such as set screws and it will bc apparent that by shifting the lever 9 the hub S may be moved longitudinally with rcspect to the hub or bushing 2 on the shaft 1. The hub 8 is connected by a spline or key 8a with the hub 2. The adjacent sides of the pulley 5 and the disk 4 are provided with friction surfaces 5C and 4n respectively. On the hub 8 of the disk 4, and between said disk and the collar 11 is arranged a loose shiftable collar 12 grooved for connection with a second operating lever 13 pivoted to the support 10. The collar l2 is pivotally connected by the links 14 with the sliding lock members 6 on the disk 4. It will be evident that by shifting the collar l2 longitudinally of the hub 8 the lock members 6 may be actuated so as to move radially either outwardly or inwardly on the disk 4. Said lock members 6 may thus be engaged with or disengaged from the teeth 5" of the pulley In the operation of the invention when it is desired to connect the pulley 5 with the shaft l the lever 9 is first operated so as to shift the disk 4 toward the pulley 5 until the friction surfaces 5c and 4a engage, the pulley bein thus practically clamped between the mem ers 3 and 4. The friction driving connection will thus be established between the pulley 5 and the shaft 1. After the pulley has been thus connected with the shaft, and just prior to placing the load on the pulley the lever 13 is shifted so as to cause the collar 12 to move toward the disk 4 and this connection forces the lookin members 6 outwardly into engagement with the teeth 5*. The pulley 5 is thus connected positively for rotation with the driving sha 1. The positions ofthe levers 9 and 13 may be -maintained by means of pins 15 adapted to pass through the outer ends of the levers and enter any one of a series of openings provided in supports 16 adjacent to the support 10.

It will be noted that the friction driving friction surfaces are separated. The outermost ends of the lockin members 6 'are pointed or beveled and t e inner ends of the teeth 5b are similarly formed to facilitate the engagement of these parts in an obvious manner. Whenever necessary the friction surfaces 4 and 5c may be renewed. Furthermore, it is to be noted that in additionto the bearing of the hubof the pulley 5 on the sleeve 2, the inner surface 5i of the rim 5" has bearing upon the outer periphery 3a of the rim 3. By this construction when the pulley 5 is running idly the tendency for vthe lub to wear excessively upon the sleeve 2, and thereby cause jumping and wa-bbling, is revented.

avin thus described the invention, what is claim as new, is:

In a. clutch of the class described, and in combination, a driving shaft, a hub keyed thereon and formed with an integral out wardly projecting friction rim, a hub keyed to the first mentioned hub and formed with an outwardly projecting friction disk, a pulley loosely mounted upon the first mentioned hub and having its rlm extending over the friction disk and formed with internal teeth for coperation therewith, the adjacent sides of the pulley and friction disk being formed with friction surfaces, sliding lookin members on the outer surfaces of the friction disk for enga ement with the teeth of the pulley, the a jacent ends of the locking members and teeth bein pointed, a collar loosely mounted on the ub of the friction disk, links connectin the collar and slidinof locking members, a ever for shifting sai loose collar to actuate the sliding locking members, and a second lever operatively connected with the hub of the friction disk for carrying said disk into engagement with the loose pulley and the frictlon rim of the first mentloned hub.

In testimony whereof I aix my signature in presence of two witnesses.

ORVILLE E. LUTZ.

Witnesses:

GEORGE CLAYTON, J r., GILBERT FoNs'rAn. 

